Fresnel Lens Large, Diameter 500mm, Focal Length 600mm, Plastic (Acrylic) Lens for solar collecting, magnifying, solar death ray, solar projector fire starter

Features

• 1pcs Large Aperture & Premium Optics Adopting high-purity German optical PMMA, this 500mm ultra-large aperture lens boasts supreme light transmittance with zero distortion and impurity. It restores true colors and delicate details, delivering professional optical performance that outperforms ordinary acrylic lenses.
• Strong Focusing Power & Uniform Light Spots Designed with an optimized light-gathering structure for even light distribution and minimal energy loss. It reaches up to 971F focal temperature under 86F sunlight with superior thermal efficiency, ideal for solar thermal experiments, PV tests and optical DIY projects.
• 3.0X Eye-Friendly Golden Magnification Features a precisely calibrated 3.0X golden magnification ratio for ultra-clear, natural enlarged views. Free of over-amplification and eye strain, it suits physics classroom demonstrations, fine observation and long-time low-vision auxiliary reading.
• Lightweight & Easy Quick Setup Featured with a lightweight body, this lens is burden-free to carry and store. It fits indoor teaching, laboratory research and outdoor use effortlessly.
• Reliable Quality: Produced by a professional manufacturer of Fresnel optical components; we provide 100% original products with reliable Amazon brand credibility and offer custom size services
• Safety Precautions: Always wear UV-protective glasses when using in sunlight; avoid direct skin contact with concentrated focal heat to prevent thermal burns.